Arc welding chill



May 26, 193}. PALM ARC WELDING CHILL File'd Jan. 6, 1930 INVENTOR.

Frederick Palm A TTORNE Y.

Patented May 26, 1931 UNITED STATES PATENT OFFICE FREDERICK PALM, OFSHOREWOOD, WISCONSIN, ASSIGNOR TO A. 0. SMITH CORPORA- TION, OFMILWAUKEE, WISGONSIN,

A CORPORATION OF NEW YORK ARC WELDING CHILL.

,Application filed January 6, 1930. Serial No. 418,951.

higlhis invention relates to an arc welding c 1 An object of theinvention is to provide a chill which can be quickly and easily adapted6 to pipe of different diameters.

Another object is to prow'de a chill having a large area of coolingsurface.

A further object is to provide a chill which readily adjusts itself tothe inner surface of the pipe.

The invention is best understood by reference to the accompanyingdrawings in which: Figure 1 is a longitudinal section of the chill.

Figure 1.

Fig. 3 is a top plan view of the mandrel with the bearings, roller andchill ring re,

moved.

2 The chill has a two brackets 2 and 3 and a cross bar 4. stub shaft 5is journaled in a pair ofdetachforked frame 1 comprising able bearings 6and 7 and supports a roller 8 between the brackets 2 and 3. The bearings6 and 7 engage in notches 9 and 10 in the brackets 2 and 3 to make themeasily detachable. Movement out of the notches 9 and 10 is restricted bydownward pressure which is exerted. against the bearings during thewelding operation. I

The chill ring 11 is of greater diameter than the roller 8, and isrotatably supported by the roller between the brackets 2 and 3. Theroller 8 is preferably provided with an annular groove 12 to conform tothe inner periphery of the chill ring 11 and to guide the chill ring asit travels along the seam.

The chill frame 1 has a short extension 13 which is integral with thecross bar .4 and which en agesin the socket 14 in the end of the man rel15. The extension 13 is held in place by a pin 16. Each chill 1sequipped with an assortment of chill rings each'of which is ada ted to acertain type of work. Some rings,

Fig. 2 is a view taken on the line 22 of such as ring 11, have anannular groove17. A ring may be replaced in a few seconds. without toolsby lifting the bearings 6 and 7 from the notches 9 and 10 in thebrackets 2 and 3.

During the welding operation the chill is placed directly beneath theseam 18 to be welded in the pipe 19. One terminal of a source ofelectric power is connected to the A metal from falling away'from theseam and causes the metal torapidly solidify and to unite the platesinto an integral structure.

- I claim:

1. An'arc welding chill comprising a chill ring, means for 'rotatablysupporting said rm the s eam to be welded.

2. An arc welding chill comprising a chill ring, a roller within saidring and eccentric thereto for rotatably supporting the same, and meansfor guidlng said ring along the seam to be welded.

3. An arc welding chill comprising a chill ring a grooved roller withinsaid ring for rotatably supporting and guiding the same, and means formoving said chill ring relative to the seam.

4. An arc welding chill comprising a metal ring, a grooved rollerarranged eccentric 5 thereto for supporting and 'ding the same,

a -support detachably holding said grooved roller, and means for movingsaid roller relatively to the seam to be w ded.

5. An arc welding chill comprising a man- 0 and means for moving saidring along drel adapted to be positioned beneath theseam being welded, ahorizontal transverse roller removably supported by said mandrel, and achill ring'rotatably supported by said roller and eccentric thereto,said chill ring being adapted to rogressively engage the metal of theseam ing welded during the welding operation.

In testimony whereof I have signed my name at Milwaukee, Wisconsin, this2nd day of January, 1930.

FREDERICK PALM.

